Porous Graphene: Microwave Combustion for Rapidly Synthesizing Pore‐Size‐Controllable Porous Graphene (Adv. Funct. Mater. 22/2018)

Wood‐Derived, Conductivity and Hierarchical Pore Integrated Thick Electrode Enabling High Areal/Volumetric Energy Density for Hybrid Capacitors

“…According to the X‐ray photoelectron spectroscopy (XPS) analysis (Figure S7c, Supporting Information), the high‐resolution Ag 3d spectrum for WC@Ag samples could be deconvoluted into two peaks at 368.46 and 374.47 eV, which correspond to binding energies of 3d 3/2 and 3d 5/2 for metallic Ag, respectively (Figure S7d, Supporting Information). [ 14 ] Moreover, nitrogen adsorption/desorption isotherms of as‐prepared samples display similar type‐IV curves with apparent H1‐type hysteresis loop (0.45 ≤ P / P 0 ≤ 1.0), supporting the existence of micropores and mesopores (Figure S7e, Supporting Information). As listed in Table S1, Supporting Information, the WC@Ag (363–586 m 2 g −1 ) possesses smaller specific surface area than WC (600 m 2 g −1 ) because Ag nanoparticles, with high atomic mass, are uncapable of contributing to specific surface area.…”

“…As revealed in Figure 1g, we could find two well‐resolved lattice fringes in the nanoparticle with the interplanar spacings of 0.237 and 0.201 nm, discernible from TEM and high‐resolution TEM (HR‐TEM) images, which can be indexed to (110) and (200) planes of Ag, respectively. [ 14 ] Of note, the selected area electron diffraction (SAED) pattern exhibits three concentric rings ascribed to (111), (200), and (311) planes, indicating the high surface activity of Ag nanoparticles. [ 15 ] As presented in Figure S6, Supporting Information, the resistance value for the WC@Ag monolith is much lower than that for WC, suggesting an enhanced conductivity for WC@Ag.…”

Spin‐Regulated Fenton‐Like Catalysis for Nonradical Oxidation over Metal Oxide@Carbon Composites

“…Oxygen‐containing functional groups on the graphene oxides can be quickly gasified by microwave‐induced frictional heating originating from the rapid rotation of the dipoles in the precursors. [ 13 ] Additionally, microwave irradiation charged the delocalized π electrons within the graphene skeleton and generated Joule heating, [ 14 ] which intensified the removal of oxygen‐containing functional groups. In this study, the bright spot recorded by a high‐speed camera corresponded to the released high‐temperature arc discharge because of the accumulated electromagnetic waves on the graphene oxide (GO) surface by microwave irradiation (Figure S2, Supporting Information).…”

Superhigh and Robust Ion Selectivity in Membranes Assembled with Monolayer Clay Nanosheets

“…[26] This performance is also much better than those of functional GO and MXene membranes as well as other porous membranes such as heterogeneous membrane and silk-based hybrid membrane (Figure 3b). [11,13,16,19,[27][28][29][30][31][32][33][34][35][36][37][38][39][40] In addition, VNMs show good voltage retention performance (Figure S9, Supporting Information). The V oc kept unchanged (≈107 mV) within 4 h and retained over 85% after 48 h at the concentration gradient of 100.…”